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What are the sources for WeatherOnline forecasts?


The WeatherOnline forecasts are created by using a MOS system developed in-house with the most current US weather services model data (GFS). The statistical methods of the Model-Output-Statistic (MOS)-System were developed in cooperation with the Meteorological Department of the University of Bonn.

What is a MOS-System?


A Model-Output-Statistic (MOS)-System combines the data of the weather forecast model and the locally recorded data for any given point by transforming the model data from a coarse grid to detailed small scale areas.
In order to do so, one needs a large volume of past model forecast data as well as the corresponding recorded data for any given location. The MOS-System relates these two sets of data in an optimized fashion allowing development of the local weather forecast by using the most current model forecast.

What are the time intervals used in the temperature and icons of the local forecasts?


The forecasted maximum temperature always refers to a 12hour window from 6am to 6om local time.
The forecasted minimum temperature always refers to the 12hour window from 6pm of the day before the forecast day to 6 am of the forecast day.
The weather icon for the morning refers to the time between 6am and 12pm local time, the icon for the afternoon is valid from 12am to 6pm local time and the evening icon refers to the time from 6pm to 12am local time.

How often are the current weather conditions and forecasts updated?


The current weather information as well as the satellite images are updated every 30 minutes whereas the radar images are being updated every 15 minutes.
The local weather forecasts as well as the weather charts are updated 8 times a day. The updates start at 2 am CEST or 3 am CEST depending on daylight saving time and continue on a three hourly bases.


Nearby Weather Stations - Grójec Απόσταση
Warsaw - Okecie 34.8 km
Ράντομ Αεροδρόμιο 61.5 km
Αεροδρόμιο Βαρσοβίας-Μόντλιν 63.0 km
Kozienice 81.6 km
Κιέλτσε 109.1 km
Σουλέγιουφ 122.9 km
Mława 142.4 km
Πουότσκ 147.6 km
Ostrołęka 149.8 km
Σαντόμιες 152.3 km
Siedlce 159.5 km
Λοτζ 163.9 km
Lotnisko Lublin-Radawiec 182.1 km
Τάρνουφ 189.7 km
Όλστιν 205.9 km
Διεθνές Αεροδρόμιο Λούμπλιν 215.2 km
Μικοουάικι 215.9 km
Κρακοβία Αεροδρόμιο -Balice 219.5 km
Αεροδρόμιο Ζέσουφ-Γιασιόνκα 224.1 km
Τσενστοχόβα 225.4 km
Nowy Sącz 232.2 km
Κέντσιν 236.8 km
Krosno 245.3 km
Κόουο 248.3 km
Βιέλουν 264.5 km
Katowice-Pyrzowice 265.1 km
Τόρουν 283.6 km
Ζακοπάνε 285.1 km
Lomnický štít 285.6 km
Ζάμοστς 286.3 km
Μπιαουίστοκ 286.7 km
Tisinec 286.8 km
Έλμπλονγκ 289.7 km
Kasprowy Wierch 290.1 km
Liesek 290.8 km
Lesko 296.8 km
Πρέσοβ 297.1 km
Štrbské Pleso 298.1 km
Πόπραντ 298.1 km
Włodawa 298.5 km
Μπιέλσκο-Μπιάουα 298.7 km
Przemyśl 299.4 km
Švábovce 299.8 km
Καλίνινγκραντ 300.6 km
Terespol 306.9 km
Κάλις 309.9 km
Μπρεστ 314.8 km
Kojsovska Hola 319.1 km
Telgárt 321.9 km
Kamenica nad Cirochou 327.1 km
Σουβάουκι 330.7 km
Chopok 331.0 km
Κόσιτσε 333.0 km
Żuławki 337.4 km
Milhostov 344.0 km
Οπόλε 347.2 km
Μπίντγκοστς 349.1 km
Ρατσίμπους 351.8 km
Jósvafő 352.5 km
Lysá hora 361.2 km
Ούζχοροντ 367.7 km
Χελ 368.0 km
Šilutė 369.3 km
Zilina Hricov 371.3 km
Ζίλινα Αεροδρόμιο 371.7 km
Αεροδρόμιο Γκντανσκ 376.2 km
Οστράβα 381.3 km
Sliač 385.4 km
Záhony 385.5 km
Λούτσενετς Αεροδρόμιο 387.5 km
Μαριγιάμπολε 391.0 km
Μίσκολτς 391.1 km
Γκρόντνο 397.5 km
Βολοντίμιρ 398.0 km
Λβιβ 402.0 km
Κλάιπεντα 404.3 km
Žiar nad Hronom 409.1 km
Prievidza 409.9 km
Eger 415.0 km
Szécsény 418.0 km
Nyiregyhaza/Napkor 418.1 km
Laukuva 418.6 km
Chojnice 419.8 km
Kékes 426.1 km
Palanga 428.7 km
Cervena 429.3 km
Poroszló 438.0 km
Raseiniai 444.3 km
Dudince 445.2 km
Lębork 447.7 km
Αεροδρόμιο Βρότσουαφ 450.1 km
Αεροδρόμιο Πόζναν-Γουαβίτσα 451.1 km
Šerák 453.5 km
Holešov 453.7 km
Κάουνας 454.5 km
Telšiai 455.8 km
Ντέμπρετσεν 460.4 km
Mochovce 460.6 km
Piła 477.8 km
Piešťany 478.9 km